From 13ac74132c8496cb924f98a568ebb56dfa4ee64a Mon Sep 17 00:00:00 2001
From: Corran Webster <cwebster@unital.dev>
Date: Fri, 24 Oct 2025 16:13:25 +0100
Subject: [PATCH] Add cross-product and tests

---
 test/test_vector.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/test/test_vector.py b/test/test_vector.py
index 1f4ae0c..3606b6d 100644
--- a/test/test_vector.py
+++ b/test/test_vector.py
@@ -4,6 +4,28 @@ from fancymath.vector import Vector
 
 
 class TestVector(unittest.TestCase):
+    def test_cross_product(self):
+        # given
+        v1 = Vector(1, 2, 3)
+        v2 = Vector(3, 2, 1)
+
+        # when
+        v3 = v1 * v2
+
+        # then
+        self.assertIsInstance(v3, Vector)
+        self.assertEqual(v3.x, -4)
+        self.assertEqual(v3.y, 8)
+        self.assertEqual(v3.z, -4)
+
+    def test_cross_product_failure(self):
+        v1 = Vector(1, 2, 3)
+        v2 = (3, 2, 1)
+
+        with self.assertRaises(TypeError):
+            v1 * v2
+
+
     def test_add_vector(self):
         v1 = Vector(1, 2, 3)
         v2 = Vector(-3, -2, -1)